Especially since I've got a lot of similar stages in this part, I may break out some chips. I only have TTL and CMOS on hand though. I'm still doing analog-ish things, like clipping and comparing, that those don't do as well. I have two LM360s which I would be happy to use, but last time I tried them, they didn't work. Hmm. Other than that, I have some LM319's, which really are kind of on the slow side.
2N3904's cooking on the fast side (like this ECL stuff) really are as fast as I need. I'm figuring bandwidth is under 50MHz for the trigger and vertical amp.I'd love to get my hand on some ECL, except that I need both inputs sometimes. Reading through the manual, my Wavetek 193 is chock full of ECL circuits, both 10k series chips and 2N3653/2N5771 discrete units. Few resistors over 500 ohms. The preamp output has a 10ns edge rise time, and the original output amp did as well (a shame the transistors managed to get cooked so I had to replace them with slower stuff I had on hand).
Not all the way. This tube needs about 10Vp-p per div: 60 vertical to cover the graticule, 100 horizontal. Behind the graticule the tube is of course round, so 100V both ways would be even clearer. I doubt the CRT can perform well over 50MHz anyway.
If I really wanted to get nasty, I'm supposing I could put a differential transformer in line near the CRT socket and send it some VHF from a band-limited amplifier, to take over past the DC-whatever amp.
John, I don't even know how I could possibly get one of those to amplify a signal other than its own! I don't even have any double sided PCB on hand. Something tells me solderless breadboard and pad-per-hole phenolic just ain't gonna cut it!
Tim
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